发明名称 ON-VEHICLE LOUDSPEAKER
摘要 PROBLEM TO BE SOLVED: To provide an on-vehicle speaker by which a sound wave with medium and high frequencies can directly reach persons on a driver's seat and an assistant driver's seat. SOLUTION: A reflecting plate 14 is fitted to a center of an upper face of a pole piece 2. The reflection plate 14 is formed in the shape of an inverted triangle made of glass, aluminum, die-cast or plastic. The reflection plate 14 is turned on the pole piece by loosening a mount screw 18 for reflecting sound wave with medium and high sound frequencies emitted mainly from a middle part of an inner circumferential face 5a of a cone diaphragm 5 to its root, so as to direct the sound wave toward ears of persons on a driver's seat and an assistant driver's seat.
申请公布号 JP2000032593(A) 申请公布日期 2000.01.28
申请号 JP19980192729 申请日期 1998.07.08
申请人 BEAT SONIC:KK 发明人 TOTANI TSUTOMU
分类号 B60R11/02;H04R1/02;H04R9/06;(IPC1-7):H04R9/06 主分类号 B60R11/02
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